EP1266177B1 - Assemblage de nettoyage, de controle du courant d'air et d'evacuation de toute coulee dans les buses d'air des fours d'incineration - Google Patents

Assemblage de nettoyage, de controle du courant d'air et d'evacuation de toute coulee dans les buses d'air des fours d'incineration Download PDF

Info

Publication number
EP1266177B1
EP1266177B1 EP01904771A EP01904771A EP1266177B1 EP 1266177 B1 EP1266177 B1 EP 1266177B1 EP 01904771 A EP01904771 A EP 01904771A EP 01904771 A EP01904771 A EP 01904771A EP 1266177 B1 EP1266177 B1 EP 1266177B1
Authority
EP
European Patent Office
Prior art keywords
regulating device
air
furnace
air port
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01904771A
Other languages
German (de)
English (en)
Other versions
EP1266177A1 (fr
Inventor
Lennart Nordenberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metso Fiber Karlstad AB
Original Assignee
Kvaerner Pulping AB
Kvaerner Pulping Technologies AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kvaerner Pulping AB, Kvaerner Pulping Technologies AB filed Critical Kvaerner Pulping AB
Publication of EP1266177A1 publication Critical patent/EP1266177A1/fr
Application granted granted Critical
Publication of EP1266177B1 publication Critical patent/EP1266177B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L13/00—Construction of valves or dampers for controlling air supply or draught
    • F23L13/06—Construction of valves or dampers for controlling air supply or draught slidable only
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/12—Combustion of pulp liquors
    • D21C11/122—Treatment, e.g. dissolution, of the smelt
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/50—Control or safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2207/00—Control
    • F23G2207/30—Oxidant supply

Definitions

  • the present invention relates to an arrangement for cleaning, airflow control and for pushing away melt from the opening of the air port in incineration boilers according to the precharacterizing clause of Claim 1.
  • the invention can preferably be applied for the abovementioned functions in principally but not exclusively the lower primary air ports in recovery boilers which are used for the chemical recovery process in paper pulp manufacture.
  • the air regulation is effected by virtue of the fact that an annular gap is formed around the sleeve and the walls of the surrounding air port, which gap is imparted an increasing flow cross section when the sleeve is drawn out in the air port away from the recovery boiler.
  • the flow cross section is closed when the sleeve has been pushed in towards the opening of the air port level with the wall of the recovery boiler, where the cleaning function is brought about when the edges of the sleeve scrape against the inner walls of the air port.
  • a disadvantage of this construction is that the air supply to the boiler is formed in an annular gap around the sleeve, which results in relatively weak penetration of the air jet into the boiler.
  • the air which is supplied to the combustion process is distributed uniformly over the entire cross section of the boiler.
  • the efficiency of the combustion process is absolutely vital in order for it to be possible to reduce emissions of inter alia NOx and CO and to minimize the risk of melt and liquor drops being carried off from the combustion chamber with the flue gases.
  • Regulating devices for air supply and integrated cleaning for air ports of recovery boilers have formed the subject of a number of inventions.
  • US A 4,653,409 and US A 5,070,823 disclose regulating devices with a cleaning function, in which the regulating cylinders are arranged essentially horizontally.
  • the object of the invention is to bring about air control and cleaning of the air port using one and the same mechanism, in which the air control is carried out in order to maintain in a simple manner the degree of penetration of the air which is supplied to the furnace of the boiler.
  • Another object is to make it possible for the combustion air to be supplied better over the entire cross section of the boiler, at the same time as the time the combustion gases remain in the boiler can be kept relatively long, which results in better combustion and reduction of the risk of liquor drops and melt being carried off from the combustion chamber with the flue gases.
  • the arrangement is arranged so that it occupies less space outside the boiler than constructions which are already in existence/use.
  • the invention also brings about threefold functionality with a minimum number of components, which results in a very cost-effective solution.
  • Another object is that the construction is to be robust and not to have complicated mechanisms which risk becoming locked if they are exposed to splash from the melt.
  • a further object is for it to be possible for the airflow to be adjusted more rapidly with a small regulating movement.
  • airflow regulation, cleaning and pushing away melt/slag can be achieved at the lowest possible cost and with great operational safety.
  • Figure 1 shows an arrangement according to the invention arranged at the air opening 30 in the wall 2 of an incineration boiler.
  • the incineration installation is preferably a recovery boiler in which residual products from the manufacture of paper pulp are incinerated, and chemicals for the cooking process can be recovered from the melt extracted.
  • a melt level 3 is formed in the bottom of the boiler, and a lower air port level for the supply of primary air is arranged directly above the melt level.
  • the actual boiler with its furnace is often 15-60 metres high, and combustion air is supplied at a number of levels up through the furnace.
  • FIG 1 shows a vertical air shaft 20 which feeds combustion air to air ports 21 which adjoin the wall 2 of the boiler.
  • the air port 21 has an upper wall 22 which is inclined at 45° from the wall of the recovery boiler and up towards the air shaft 20.
  • the lower wall 23 of the air port runs essentially horizontally from the wall 2 of the recovery boiler and out towards the air shaft 20.
  • the air port 21 is delimited laterally by two essentially parallel, plane walls 24a, 24b (see Figure 3). The air port therefore extends between the air shaft 20 and the air opening 30 arranged in and parallel to the wall 2 of the recovery boiler.
  • a regulating device 10 Arranged inside the air port 21 is a regulating device 10 which is mounted on the end of a regulating rod 11 which is in turn actuated by servo means 9.
  • the servo means 9 can suitably be a direct-acting pneumatic cylinder or an electric motor which, via a worm gear, actuates the regulating rod via a rack integrated with the regulating rod.
  • the regulating rod is suspended in such a manner at two bearing points 15, 16 arranged in the walls of the air port that the regulating rod runs essentially parallel to the upper wall 22 of the air port.
  • the servo means 9 can actuate the regulating device 10 so that the regulating device moves in a direction at 45° in relation to the horizontal plane and inclined upwardly and outwardly from the interior of the recovery boiler.
  • FIG 2 shows the arrangement seen in the same view as in Figure 1.
  • the regulating device 10 is shown here in two alternative positions, position PS in which the air opening 30 is closed and position PO in which the regulating device 10' has been drawn back to its maximum extent.
  • position PO the airflow out to the air port opening is completely unrestricted from the air shaft 20, via the air port 21, which air port has essentially at least the same flow cross section from the shaft 20 and out through the opening 30.
  • Figure 3 shows the arrangement in a view from above in Figures 1 and 2.
  • the regulating device 10 is shown here in the drawn-back position PO.
  • the airflow is led down in the air shaft 20, into the figure, and on out to the left in the figure via the air port 21 and its opening 30 to the furnace 4.
  • the regulating device is a piston of rhombic shape, the outer shape of which is congruent with the throughflow area of the air opening, see Figure 4, and is thus made in such a manner that the piston can pass freely through the air duct and its opening 30.
  • the delimiting walls of the regulating device are all plane, but this is not absolutely necessary.
  • the upper and/or lower delimiting surface 12 and, respectively, 13 of the regulating device 10 can have a convex shape, curved around an axis parallel to the regulating rod 11, the corresponding upper and lower walls in the air port 21 of course being given a congruent concave shape in a corresponding manner.
  • the upper delimiting surface 12 of the regulating device moves parallel to the upper wall 22 of the air port and with an essentially constant spacing being maintained between them during the entire movement of the regulating device into or out from the air opening 30.
  • the lateral delimiting surfaces 14a, 14b of the regulating device interact in a similar manner with the side walls 24a, 24b of the air port, with an essentially constant spacing being maintained between them during the entire movement of the regulating device into or out from the air opening 30. In this way, essentially the entire airflow which enters the furnace via the air opening 30 will be formed below the regulating device, between its lower delimiting surface 13 and the lower wall 23 of the air port.
  • the constant spacing between the upper wall and the two side walls and the regulating device is to be kept as small as possible so as to ensure that the main airflow is formed below the regulating device, for maximum penetration capacity.
  • a certain small leakage flow can nevertheless be accepted for cooling purposes, but this leakage flow is to correspond to only fractions of the total airflow into the furnace during normal operation.
  • a number of cooling ducts can also be incorporated in interacting walls or through the piston, filling material 17 etc. of the regulating device. These cooling ducts can be brought about via through-bores in the regulating device, or via ducts in the walls of the regulating device/air port.
  • the outer end of the regulating device, directed towards the furnace, preferably has a cup-shaped recess/filling chamber which can contain a heat-resistant mass (tamping mass).
  • the outer contours of the regulating device then form edges directed towards the interior of the furnace and parallel to the walls of the air port, which surround the mass and form sharp scraping edges which engage with the edges of the air port when the regulating device is actuated in the direction of the furnace.
  • the regulating rod 11 of the regulating device is to be of such a length that the servo means 9 can guide the outer edges of the regulating device past the air port and into the furnace, preferably in such a manner that the outer end of the regulating device is, when pushed into the furnace to its maximum extent, arranged below a horizontal plane containing the lower wall of the air port, the outer end then lying at least 2-10 cm below the lower edge of the air port.
  • the regulating device can be used in order to penetrate down towards the upper surface of the melt and push away the melt bed or slag which has built up at the lower edge of the opening 30 of the air port, as otherwise the bed or the slag can impair the airflow into the furnace.
  • the lower rhombic piston of the regulating device can be divided in a horizontal plane into an upper and a lower section, 10a and, respectively, 10b.
  • the upper section 10a then bears/scrapes against the upper wall of the air port and 40-60% of the side walls
  • the lower section 10b bears/scrapes against the lower wall of the air port and 60-40% of the side walls.
  • a transfer mechanism (not shown) can bring about a relative movement between the upper and lower sections, whereupon the lower section 10b can be imparted a movement horizontally into the furnace.
  • An example of a transfer mechanism might be an actuating rod parallel to the regulating rod 11, which, only in the lower position of the regulating device, is rotated and pushes the lower section.
  • Another variant might be a stop heel for the upper section, in which case further operation of the regulating rod actuates only the lower section.
  • Variants are also possible in which a relative movement is brought about in the sliding plane between the upper and lower sections when the lower section reaches the lower wall of the air port.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Paper (AREA)
  • Incineration Of Waste (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Air Supply (AREA)
  • Processing Of Solid Wastes (AREA)

Claims (10)

  1. Assemblage de nettoyage, de contrôle du courant d'air et si nécessaire d'évacuation de toute coulée dans des buses d'air (21) d'installations d'incinération (1), de préférence des fours de récupération pour la récupération de produits chimiques dans la fabrication de pâte à papier chimique, ledit assemblage comprenant:
    - une buse d'air (21) pour amener de l'air dans le four (4) de l'installation d'incinération, ladite buse d'air s'ouvrant dans la paroi (2) du four par l'intermédiaire d'une ouverture d'air (30) dans la paroi du four d'incinération, ladite ouverture d'air étant délimitée par deux bords de délimitation essentiellement verticaux et mutuellement parallèles (34a, 34b) et un bord de délimitation inférieur et supérieur (33 et, respectivement, 32),
    - un dispositif de régulation (10) disposé dans la buse d'air, la forme dudit dispositif coïncidant avec la section de la buse d'air, avec deux parois de délimitation essentiellement verticales et mutuellement parallèles (14a, 14b) et avec une paroi de délimitation inférieure et supérieure (13 et, respectivement, 12),
    - des moyens d'asservissement (9) disposés pour imprimer au dispositif de régulation (10) un mouvement dans et hors de l'intérieur du four à travers l'ouverture d'air (30), les parois de délimitation (12, 13, 14a, 14b) du dispositif de régulation, lorsqu'elles passent à travers l'ouverture d'air, entrant en contact étroit avec les bords (33, 32, 34a, 34b) de l'ouverture d'air,
    - les moyens d'asservissement sont disposés de manière à imprimer au dispositif de régulation (10), par l'intermédiaire d'une tige de régulation (11), un mouvement dans un plan disposé sous un certain angle par rapport au plan horizontal,
    - le dispositif de régulation (10), par l'actionnement de la tige de régulation (11), se voit imprimer un mouvement pour rentrer dans ou sortir de l'ouverture d'air (30) et de l'intérieur du four, la paroi de délimitation supérieure (12) du dispositif de régulation et la partie principale des parois de délimitation verticales (14a, 14b) maintenant un espacement essentiellement constant entre les parois supérieure et latérales (22, 24a, 24b) de la buse d'air pendant le mouvement, caractérisé en ce que ledit espacement constant et l'espacement entre la paroi de délimitation inférieure (13) du dispositif de régulation (10) et la paroi inférieure (23) de la buse d'air (21) sont tels qu' essentiellement la totalité du courant d'air dans le four (4) soit formée en dessous du dispositif de régulation (10), entre sa paroi de délimitation inférieure (13) et la paroi inférieure (23) de la buse d'air.
  2. Assemblage selon la revendication 1, caractérisé en ce que les parois de délimitation (12, 13, 14a, 14b) du dispositif de régulation (10) sont planes.
  3. Assemblage selon la revendication 1 ou 2, caractérisé en ce que l' angle entre le mouvement du dispositif de régulation et le plan horizontal est compris dans la gamme allant de 30° à 60°, et est de préférence égal à 45°.
  4. Assemblage selon la revendication 1, 2 ou 3, caractérisé en ce que la forme du dispositif de régulation (10), et par conséquent aussi de l'ouverture d'air (30) dans la paroi du four est rhomboïdale.
  5. Assemblage selon la revendication 4, caractérisé en ce que le dispositif de régulation (10) est conçu comme un piston, et en ce que les contours extérieurs du piston forment des parois tournées vers l' intérieur du four et dont les bords avant forment des bords de raclage tranchants (19) qui entrent en contact avec les parois de la buse d'air et les bords de l'ouverture (30).
  6. Assemblage selon la revendication 5, caractérisé en ce que le dispositif de régulation (10) est équipé d'un certain nombre de conduits de refroidissement permettant la formation d'un courant d'air de refroidissement limité à travers la paroi avant (17) et/ou entre les parois coopérantes du dispositif de régulation et de la buse d'air même lorsque la buse d'air est fermée par le dispositif de régulation.
  7. Assemblage selon l'une quelconque des revendications précédentes, caractérisé en ce que la paroi de délimitation inférieure (13) du dispositif de régulation (10) est essentiellement horizontale, au moins dans sa partie proche du four, et en ce que la paroi inférieure (23) de la buse d'air est de la même manière disposée horizontalement, avec comme conséquence qu'un courant d'air dans le four dans un plan horizontal est formé lorsque le dispositif de régulation (10) est extrait hors de l'ouverture d'air (30) par les moyens d'asservissement (9) pour ouvrir le courant d'air dans le four (4).
  8. Assemblage selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens d'asservissement (9) sont disposés de manière à imprimer au dispositif de régulation, par l'intermédiaire de la tige de régulation (11), un mouvement dans le four (4), la paroi de délimitation inférieure (13) sur l'extrémité extérieure du dispositif de régulation étant, dans la position intérieure extrême dans le four, disposée en dessous d'un plan horizontal contenant le bord inférieur (33) de l'ouverture d'air (30).
  9. Assemblage selon l'une quelconque des revendications précédentes, caractérisé en ce que la partie inférieure du dispositif de régulation tournée vers le four est divisée en deux sections qui peuvent être déplacées l'une par rapport à l'autre, une section supérieure (10a) et une section inférieure (10b), lesdites sections pouvant être déplacées l'une par rapport à l'autre dans un plan disposé essentiellement parallèlement au plan horizontal.
  10. Assemblage selon l'une quelconque des revendications 1 à 8, caractérisé en ce que, en connexion avec la fermeture du courant d'air dans le four, lorsque la paroi de délimitation inférieure du dispositif de régulation entre en interaction avec le bord inférieur de la buse d'air, la section inférieure (10b) se voit imprimer, par l'intermédiaire d'un mécanisme de transfert, un mouvement dans le four (4) dans une direction, de préférence horizontale, qui est différente de la direction principale du mouvement de régulation du dispositif de régulation.
EP01904771A 2000-02-18 2001-02-15 Assemblage de nettoyage, de controle du courant d'air et d'evacuation de toute coulee dans les buses d'air des fours d'incineration Expired - Lifetime EP1266177B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0000456 2000-02-18
SE0000456A SE0000456L (sv) 2000-02-18 2000-02-18 Arrangemang för rengöring, luftflödesstyrning samt smältabortstötning i luftportar till förbränningspannor
PCT/SE2001/000331 WO2001061248A1 (fr) 2000-02-18 2001-02-15 Assemblage de nettoyage, de controle du courant d'air et d'evacuation de toute coulee dans les buses d'air des fours d'incineration

Publications (2)

Publication Number Publication Date
EP1266177A1 EP1266177A1 (fr) 2002-12-18
EP1266177B1 true EP1266177B1 (fr) 2006-02-01

Family

ID=20278435

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01904771A Expired - Lifetime EP1266177B1 (fr) 2000-02-18 2001-02-15 Assemblage de nettoyage, de controle du courant d'air et d'evacuation de toute coulee dans les buses d'air des fours d'incineration

Country Status (8)

Country Link
US (1) US6672227B2 (fr)
EP (1) EP1266177B1 (fr)
AT (1) ATE317094T1 (fr)
AU (1) AU2001232595A1 (fr)
BR (1) BR0108424B1 (fr)
DE (1) DE60116995D1 (fr)
SE (1) SE0000456L (fr)
WO (1) WO2001061248A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6988468B2 (en) * 2003-06-12 2006-01-24 Clyde Bergemann, Inc. Automatic combustion air port cleaner with air/oil indexing mechanism
US7392751B2 (en) * 2004-05-28 2008-07-01 Diamond Power International, Inc. Port rodder with velocity damper
US7735435B2 (en) * 2006-05-24 2010-06-15 Diamond Power International, Inc. Apparatus for cleaning a smelt spout of a combustion device

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE349132B (fr) * 1971-01-07 1972-09-18 Goetaverken Angteknik Ab
SE370574B (fr) * 1973-03-05 1974-10-21 Goetaverken Angteknik Ab
SE375848B (fr) * 1973-05-25 1975-04-28 Goetaverken Angteknik Ab
SE379846B (fr) * 1974-01-30 1975-10-20 Goetaverken Angteknik Ab
SE390755B (sv) * 1974-10-07 1977-01-17 Goetaverken Angteknik Ab Anordning for att reglera lufttillforseln vid en eldstad
SE8500668L (sv) * 1985-02-13 1985-12-02 Lt Produkter Skutsker Ab Regler- och rensningsanordning vid luftportar anordnade i sidoveggen av en eldstad
US4822428A (en) * 1987-04-29 1989-04-18 Goodspeed Byron Lester Apparatus for cleaning air ports of a chemical recovery furnace
US4872834A (en) * 1988-11-09 1989-10-10 Williams Jr John W Recovery boiler port cleaner
US5070823A (en) * 1991-01-24 1991-12-10 The Babcock & Wilcox Company Port rodder with anti-drift feature
US5167192A (en) * 1991-02-28 1992-12-01 Anthony-Ross Company Damper controller for a chemical recovery furnace
SE502092C2 (sv) * 1993-08-23 1995-08-14 Kvaerner Pulping Tech Anordning för manövrering av luftreglerdon vid en ugn
SE503950C2 (sv) * 1994-09-01 1996-10-07 Kvaerner Pulping Tech Spjällanordning
US5531189A (en) * 1994-09-12 1996-07-02 Drayton Corporation Automated damping port rodder

Also Published As

Publication number Publication date
US6672227B2 (en) 2004-01-06
SE514285C2 (sv) 2001-02-05
SE0000456D0 (sv) 2000-02-18
WO2001061248A1 (fr) 2001-08-23
ATE317094T1 (de) 2006-02-15
AU2001232595A1 (en) 2001-08-27
US20030010265A1 (en) 2003-01-16
SE0000456L (sv) 2001-02-05
EP1266177A1 (fr) 2002-12-18
BR0108424A (pt) 2003-03-25
DE60116995D1 (de) 2006-04-13
BR0108424B1 (pt) 2009-08-11

Similar Documents

Publication Publication Date Title
RU2100736C1 (ru) Водоразбрызгивающая трубка для очистки теплоносителей
BRPI0712207B1 (pt) aparelho de limpeza para a limpeza de uma bica de smelt (fundido) de uma caldeira
EP1266177B1 (fr) Assemblage de nettoyage, de controle du courant d'air et d'evacuation de toute coulee dans les buses d'air des fours d'incineration
FI91897B (fi) Laite kemiallisen regenerointiuunin ilma-aukkojen puhdistamiseksi
EP0636840B1 (fr) Incinérateur
US5044327A (en) Air/burner port
CN106016256B (zh) 落渣装置及循环流化床锅炉
US5824275A (en) Secondary and tertiary air nozzle for furnace apparatus
FI61346B (fi) Anordning foer att reglera lufttillfoerseln vid en foerbraenningsugn
US4477248A (en) Oil burner shutter
EP0991898B1 (fr) Boite a vent pour un four a recuperation chimique
CA1179202A (fr) Obturateur de canalisation d'evacuation de lits fluidises
CN108758639B (zh) 一种垃圾热解气化及二燃室一体式装置
GB2106234A (en) Apparatus and method for utilizing hot waste gases
CN208407986U (zh) 玻璃窑炉投料口除尘系统
CA2078108C (fr) Commande de volet pour four de recuperation chimique
DE396719C (de) Verschluss fuer Aschentrichter
KR200186374Y1 (ko) 난방수 분리 겸용 보일러
RU2252363C2 (ru) Шибер загрузочного устройства плазмохимического реактора
JPH0684129U (ja) 廃棄物燃焼装置
FI62178B (fi) Kombinerat reglerings- och rengoeringsorgan i luftoeppningen ien braennugns luftinmatningskanal
US1351572A (en) Ash-conveyer
CA2245294A1 (fr) Methode et appareil pour amelioration supplementaire de l'ecoulement des liquides et du melange des gaz dans les chaudieres
KR100249623B1 (ko) 깨스누출방지 밸브가 장착된 자동깨스렌지
CN1129734C (zh) 燃烧加速设备

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20020918

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17Q First examination report despatched

Effective date: 20050502

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060201

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20060201

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060201

Ref country code: LI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060201

Ref country code: CH

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060201

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060201

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060201

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060215

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060228

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 60116995

Country of ref document: DE

Date of ref document: 20060413

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060501

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060501

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060501

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060512

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060703

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060901

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20061103

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20060501

EN Fr: translation not filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070323

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060502

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060215

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060201

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060201